public bool Delete(FtpDirectory ftpDirectory,
CancellationToken cancellationToken)
{
return(this.DeleteAsync(ftpDirectory,
cancellationToken)
.Result);
}
private async Task <bool> ChangeWorkingDirectoryAsync(ComplexSocket controlComplexSocket,
string directory,
CancellationToken cancellationToken,
bool createDirectoryIfNotExists = false)
{
var success = await this.SendAndLogAsync(controlComplexSocket,
cancellationToken,
"CWD {0}",
directory);
if (!success)
{
return(false);
}
var ftpReply = await this.ReceiveAndLogAsync(controlComplexSocket,
cancellationToken);
switch (ftpReply.FtpResponseType)
{
case FtpResponseType.PermanentNegativeCompletion:
// TODO some parsing of the actual FtpReply.ResponseCode should be done in here. i assume 5xx-state means "directory does not exist" all the time, which might be wrong
if (!createDirectoryIfNotExists)
{
return(false);
}
success = await this.SendAndLogAsync(controlComplexSocket,
cancellationToken,
"MKD {0}",
directory);
if (!success)
{
return(false);
}
ftpReply = await this.ReceiveAndLogAsync(controlComplexSocket,
cancellationToken);
if (!ftpReply.Success)
{
return(false);
}
goto case FtpResponseType.PositiveCompletion;
case FtpResponseType.PositiveCompletion:
this._currentFtpDirectory = FtpDirectory.Create(this._currentFtpDirectory,
directory);
break;
default:
return(false);
}
return(true);
}
private async Task <bool> GotoParentDirectoryAsync(ComplexSocket controlComplexSocket,
FtpFileSystemObject ftpFileSystemObject,
CancellationToken cancellationToken,
bool createDirectoryIfNotExists = false)
{
var ftpDirectory = ftpFileSystemObject.GetParentFtpDirectory();
var directoryChanges = FtpClientHelper.DirectoryChanges(this._currentFtpDirectory,
ftpDirectory);
foreach (var directoryChange in directoryChanges)
{
if (string.Equals(directoryChange,
FtpFileSystemObject.ParentChangeCommand))
{
var success = await this.SendAndLogAsync(controlComplexSocket,
cancellationToken,
"CDUP");
if (success)
{
var ftpReply = await this.ReceiveAndLogAsync(controlComplexSocket,
cancellationToken);
if (ftpReply.Success)
{
this._currentFtpDirectory = this._currentFtpDirectory.GetParentFtpDirectory();
}
}
}
else
{
var success = await this.ChangeWorkingDirectoryAsync(controlComplexSocket,
directoryChange,
cancellationToken,
createDirectoryIfNotExists);
if (!success)
{
return(false);
}
}
}
return(true);
}
public async Task <bool> DeleteAsync(FtpDirectory ftpDirectory,
CancellationToken cancellationToken)
{
using (await this._mutex.LockAsync(cancellationToken))
{
var controlComplexSocket = await this.EnsureConnectionAndAuthenticationAsync(cancellationToken);
if (controlComplexSocket == null)
{
return(false);
}
var success = await this.GotoParentDirectoryAsync(controlComplexSocket,
ftpDirectory,
cancellationToken);
if (!success)
{
return(false);
}
success = await this.SendAndLogAsync(controlComplexSocket,
cancellationToken,
"RMD {0}",
ftpDirectory.DirectoryName);
if (!success)
{
return(false);
}
var ftpReply = await this.ReceiveAndLogAsync(controlComplexSocket,
cancellationToken);
if (!ftpReply.Success)
{
return(false);
}
}
return(true);
}
public async Task <bool> CreateDirectoryAsync(string path,
CancellationToken cancellationToken)
{
using (await this._mutex.LockAsync())
{
var controlComplexSocket = await this.EnsureConnectionAndAuthenticationAsync(cancellationToken);
if (controlComplexSocket == null)
{
return(false);
}
var ftpDirectory = FtpDirectory.Create(path);
var success = await this.GotoParentDirectoryAsync(controlComplexSocket,
ftpDirectory,
cancellationToken,
true);
return(success);
}
}
public static IEnumerable <string> DirectoryChanges(FtpDirectory sourceFtpDirectory,
FtpDirectory targetFtpDirectory)
{
var sourceHierarchy = sourceFtpDirectory.GetHierarchy()
.ToList();
var targetHierarchy = targetFtpDirectory.GetHierarchy()
.ToList();
var wereEqualBefore = true;
var i = 0;
var levelOfEqual = 0;
for (; i < sourceHierarchy.Count; i++)
{
var sourceDirectory = sourceHierarchy.ElementAt(i);
var targetDirectory = targetHierarchy.ElementAtOrDefault(i);
if (wereEqualBefore)
{
if (!string.Equals(sourceDirectory,
targetDirectory))
{
levelOfEqual = i;
wereEqualBefore = false;
}
}
if (!wereEqualBefore)
{
yield return(FtpFileSystemObject.ParentChangeCommand);
}
}
foreach (var directory in targetHierarchy.Skip(levelOfEqual))
{
yield return(directory);
}
}
public async Task <bool> DeleteAsync(FtpDirectory ftpDirectory)
{
return(await this.DeleteAsync(ftpDirectory,
CancellationToken.None));
}
public bool Delete(FtpDirectory ftpDirectory)
{
return(this.Delete(ftpDirectory,
CancellationToken.None));
}
public async Task <IEnumerable <FtpListItem> > GetListingAsync(string path,
CancellationToken cancellationToken)
{
IEnumerable <string> rawListing;
FtpListType ftpListType;
using (await this._mutex.LockAsync(cancellationToken))
{
var controlComplexSocket = await this.EnsureConnectionAndAuthenticationAsync(cancellationToken);
if (controlComplexSocket == null)
{
return(Enumerable.Empty <FtpListItem>());
}
string command;
var ftpFeatures = await this.GetFtpFeaturesAsync(controlComplexSocket,
cancellationToken);
if (ftpFeatures.HasFlag(FtpFeatures.MLSD))
{
ftpListType = FtpListType.MLSD;
command = "MLSD";
}
else if (ftpFeatures.HasFlag(FtpFeatures.MLST))
{
ftpListType = FtpListType.MLST;
command = "MLST";
}
else
{
ftpListType = FtpListType.LIST;
command = "LIST";
}
var ftpDirectory = FtpDirectory.Create(path);
{
var success = await this.GotoParentDirectoryAsync(controlComplexSocket,
ftpDirectory,
cancellationToken);
if (!success)
{
return(Enumerable.Empty <FtpListItem>());
}
}
if (!string.IsNullOrEmpty(ftpDirectory.DirectoryName))
{
var success = await this.ChangeWorkingDirectoryAsync(controlComplexSocket,
ftpDirectory.DirectoryName,
cancellationToken);
if (!success)
{
return(Enumerable.Empty <FtpListItem>());
}
}
{
// sending PASV
// reading PASV
var transferComplexSocket = await this.GetPassiveComplexSocketAsync(controlComplexSocket,
cancellationToken);
if (transferComplexSocket == null)
{
return(Enumerable.Empty <FtpListItem>());
}
FtpReply ftpReply;
using (transferComplexSocket)
{
// sending LIST/...
// open PASV
// reading LIST/... (150 Here comes the directory listing)
var success = await this.SendAndLogAsync(controlComplexSocket,
cancellationToken,
command);
if (!success)
{
return(Enumerable.Empty <FtpListItem>());
}
success = await transferComplexSocket.ConnectAsync(cancellationToken);
if (!success)
{
return(Enumerable.Empty <FtpListItem>());
}
ftpReply = await this.ReceiveAndLogAsync(controlComplexSocket,
cancellationToken);
if (!ftpReply.Success)
{
return(Enumerable.Empty <FtpListItem>());
}
{
this.WaitBeforeReceive();
// reading transfer
var receiveResult = await transferComplexSocket.Socket.ReceiveAsync(this.ChunkReceiveBufferSize,
transferComplexSocket.GetSocketAsyncEventArgs,
this.Encoding,
cancellationToken);
if (!receiveResult.Success)
{
return(Enumerable.Empty <FtpListItem>());
}
rawListing = (receiveResult.Data ?? string.Empty).Split(Environment.NewLine.ToCharArray(),
StringSplitOptions.RemoveEmptyEntries);
}
}
if (!ftpReply.Completed)
{
// reading LIST/... (226 Directory send OK)
ftpReply = await this.ReceiveAndLogAsync(controlComplexSocket,
cancellationToken);
if (!ftpReply.Success)
{
return(Enumerable.Empty <FtpListItem>());
}
}
}
}
var ftpListItems = FtpListItem.ParseList(rawListing,
ftpListType);
return(ftpListItems);
}
